The responses of magno- and parvocellular cells of the monkey's lateral geniculate body to moving stimuli

Lee, B. B.; Creutzfeldt, O. D.; Elepfandt, Andreas

doi:10.1007/bf00236771

Cited by 60 publications

(29 citation statements)

References 21 publications

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“…This axon was physiologically identified as monocular and transient, with an ON-center, type III receptive field that resembled units of the magnocelhdar geniculate laminae (Wiesel and Hubel, 1966;Dreher et al, 1976;Schiller and Malpeli, 1978;Lee et al, 1979). Vol.…”

Section: Resultsmentioning

confidence: 99%

“…Both techniques yielded satisfactory results. However, the latter provided direct identification of thalamic afferents and in addition enabled us to distinquish parvoand magnocellular afferents from one another on the basis of receptive field organization (Wiesel and Hubel, 1966;Sherman et al, 1976;Dreher et al, 1977;Schiller and Malpeli, 1978;Lee et al, 1979). These studies have been reported briefly (Blasdel et al, 1981;Blasdel and Lund, 1982a, b).…”

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confidence: 99%

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Termination of afferent axons in macaque striate cortex

Blasdel¹,

Lund²

1983

J. Neurosci.

429

280

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We used horseradish peroxidase (HRP) to orthogradely label afferent axons in macaque striate cortex. Of the 38 axons that we recovered, nine were recorded intracelhrlarly before being filled with HRP. Light microscope and computer reconstructions of filled processes reveal highly stereotyped patterns of arborization and suggest that there are at least five discrete populations of lateral geniculate nucleus (LGN) afferent axon: (1) those to layer 4Cp, which have extremely circumscribed, dense terminal fields (small branches of which occasionally intrude into 4Ca) but which have not been shown to project to other laminae; (2) afferents to layer 4A, which in some cases send fine ascending collaterals into layer 2-3 and which do not, apparently, send collaterals to other laminae; (3) afferents to layer 1, which are fine, extend over large distances horizontally, and send collaterals to layer 6A; (4) afferents to the lower two-thirds of layer 4Ca, which have few or no collaterals in layer 6; and (5) afferents to the upper half of layer 4Ca, which have arborizing collaterals in layer 6B. Of the nine axons that were recorded intracellularly, those with projections to layer 4Cp (two axons) and to layer 1 (one axon) had color-selective properties, whereas those (six axons) which arborized in 4Ca all had transient, broad band and highly contrast-sensitive receptive fields. These properties are consistent with derivations from somata in the parvocellular and magnocellular divisions of the LGN, respectively. Afferents to 4Ca were found to cover approximately 6 times as much surface area as afferents to 4Cp. The preterminal trunks of all axons were found to follow tortuous paths through the neuropil-paths that may derive from axon segregation during development. The wide ranging, patchy distributions of single afferents in 4C~u suggest that individual 4& axons supply more than one ocular dominance stripe. In one case where the terminal arborization of a 4Ca axon was mapped against the transneuronally determined pattern of ocular dominance, three separate patches of terminal boutons were indeed found to coincide with the bands of one eye.The primate visual system is characterized by successive and discrete transformations in the neural representation of visual space. One such transformation occurs between the lateral geniculate nucleus (LGN) and cells in the thalamo-recipient laminae of striate cortex. Even though the receptive fields of cells in layer 4C-the layer that receives most of the LGN input-lack orientation selectivity and to some extent resemble those of the LGN, the transfer of information seems not to occur in

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Termination of afferent axons in macaque striate cortex

Blasdel¹,

Lund²

1983

J. Neurosci.

429

280

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show abstract

“…The non-linear input to a Y cell allows it to respond to fine patterns but only in a way which enables the cell to signal that a fine pattern is present somewhere in its field but does not enable the cell to signal where the pattern is located. Thus, Y cells could act to gate the cortical analysis of fine patterns by their increased impulse activity when patterns are present in their receptive fields (Lennie, 1980a Lee, Creutzfeldt, & Elepfandt (1979) have pointed out similarities, in the response to moving stimuli, of monkey magnocellular neurones and cells from the A and Al layers of the cat's l.g.n., in agreement with the homology we have proposed above.…”

Section: Latency To Electrical Stimulationmentioning

confidence: 99%

X and Y cells in the lateral geniculate nucleus of macaque monkeys.

Kaplan¹,

Shapley²

1982

The Journal of Physiology

564

347

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SUMMARY1. Cells of the lateral geniculate nucleus (l.g.n.) in macaque monkeys were sorted into two functional groups on the basis of spatial summation of visually evoked neural signals.2. Cells were called X cells if their responses to contrast reversal of fine sine gratings were at the f-ndamental temporal modulation frequency with null positons one quarter of a cycle away from positions for peak response. Cells were called Y cells if their responses to such stimuli were at twice the modulation frequency and were approximately independent of spatial phase.3. Ninety-nine percent of the cells in the four dorsal parvocellular layers of the l.g.n. were X cells; about seventy-five percent of the cells in the two ventral magnocellular layers were also X cells. The remainder were Y cells.4. We confirmed previous findings that magnocellular cells had a shorter latency of response to electrical stimulation of the optic chiasm.5. Magnocellular cells had much higher contrast sensitivities than did parvocellular cells.6. Therefore, two distinct classes of X cells exist in the macaque l.g.n.: parvocellular X cells and magnocellular X cells. The great difference in their properties suggests that they have different functions in vision. The Y cells in the magnocellular layers form a third functional group with spatial properties distinctly different from the X cells.

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“…A recent study based on the model [42] reported that well-defi ned LGN spike trains reduce the noise and elevate the response to the preferred stimulus. It is known that the relay cells are distributed nonrandomly in the LGN of cats and monkeys [43][44][45][46][47] . So the alignment of the receptive fields of relay cells in the LGN [1,5,7,8] could also …”

Section: Mr and Orientation Selectivitymentioning

confidence: 99%

Orientation selectivity in cat primary visual cortex: local and global measurement

Yan

Song

et al. 2015

Neurosci. Bull.

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In this study, we investigated orientation selectivity in cat primary visual cortex (V1) and its relationship with various parameters. We found a strong correlation between circular variance (CV) and orthogonal-topreferred response ratio (O/P ratio), and a moderate correlation between tuning width and O/P ratio. Moreover, the suppression far from the peak that accounted for the lower CV in cat V1 cells also contributed to the narrowing of the tuning width of cells. We also studied the dependence of orientation selectivity on the modulation ratio for each cell, which is consistent with robust entrainment of the neuronal response to the phase of the drifting grating stimulus. In conclusion, the CV (global measure) and tuning width (local measure) are signifi cantly correlated with the modulation ratio.

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The responses of magno- and parvocellular cells of the monkey's lateral geniculate body to moving stimuli

Cited by 60 publications

References 21 publications

Termination of afferent axons in macaque striate cortex

Termination of afferent axons in macaque striate cortex

X and Y cells in the lateral geniculate nucleus of macaque monkeys.

Orientation selectivity in cat primary visual cortex: local and global measurement

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